In the wild, it is a shrub with reduced sizes, similar to hazelnut. Before spring sprouting, it develops very attractive hanging bunches: these are the male flowers. Female flowers go unnoticed. It has simple, oval and dentate leaves, with very marked nerves.
Outdoor, in full sun or semi-shade. Avoid long exposures in full sun during summer.
Moderate, but a constant humidity of the substrate must be kept.
Spring and fall.
It is not recommendable to water during summer.
Every 2 to 3 years, in fall or at the very end of winter.
Akadama 100%, or mixed with volcanic clay (30%).
Pruning and pinching
Structural pruning can be performed in winter, when the tree is leafless and thus it is easier to foresee the result.
Let shoots grow up to 5-6 leaves and pinch the tips. Pinching can affect flowering, so it is recommended to let the branches lengthen when possible.
Spring and summer.
Very common in gardening, gathered with plants of the genus «Forsythia», character-ized, like «Corylopsis», for their very early bloom, occurring at the end of winter.